Electric chisel capable of quickly replacing chisel head

Abstract

The utility model discloses an electric chisel capable of quickly replacing a chisel head, which comprises a machine body, and a first support rod is nested at the left end of the machine body; a second supporting rod is arranged at the left end of the first supporting rod in a sliding mode, a chisel head body is arranged at the left end of the second supporting rod in a sliding mode, a sliding block is fixed to the right end of the chisel head body, the outer end of the sliding block extends into a sliding groove to form a clamping mechanism, and the sliding groove is formed in the second supporting rod; a protruding block is arranged in the sliding block in a sliding mode, and the outer end of the protruding block is semicircular. The outer end of the protruding block extends into a groove to form a clamping mechanism, and the groove is formed in the second supporting rod. The electric chisel with the chisel head capable of being rapidly replaced is provided with the sliding block, by rotating the chisel head body, the chisel head body rotates to drive the sliding block to rotate, so that the sliding block is disengaged from the sliding groove, and then the chisel head body can be rapidly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric chisels, in particular to an electric chisel with a chisel head capable of being quickly replaced. Background Art

[0002] In construction, decoration and demolition projects, electric chisels are widely used to chisel hard materials such as concrete, stone, brick, etc. It can control the force more accurately to avoid damage from the external environment, and the electric chisel has the characteristics of easy operation, high chisel head speed and high processing efficiency;

[0003] Reference publication number CN209615409U discloses a multifunctional chisel, which can be disassembled through the design of the connecting rod of the chisel head and the connecting groove on the first-stage rod. Since the chisel head is the most seriously worn in the actual processing, replacing only the chisel head can greatly save materials and avoid waste. In addition, due to the design of the limit rod, the installation of the chisel head is very stable and will not fall off during the processing, ensuring the safety of the processing. However, there are still the following problems:

[0004] In actual use of the above device, although the chisel head is connected by threaded fixation, when replacing the chisel head, since it is fixed by threaded fixation, the chisel head needs to be rotated to drive the connecting rod to rotate inside the connecting groove, and the threaded connection takes a long time to replace the chisel head, resulting in slow replacement of the chisel head.

[0005] Therefore, we have proposed an electric chisel with a quick-change chisel head that can solve the above problems well. Utility Model Content

[0006] The purpose of the utility model is to provide an electric chisel with a quickly replaceable chisel head, so as to solve the problem in the current market proposed by the above-mentioned background technology that the chisel head needs to be rotated to drive the connecting rod to rotate inside the connecting groove, and the threaded connection takes a long time to replace the chisel head, resulting in slow replacement of the chisel head.

[0007] To achieve the above object, the utility model provides the following technical solution: an electric chisel with a quickly replaceable chisel head, comprising a body, a first support rod being embedded at the left end of the body;

[0008] Also includes:

[0009] The left end of the first support rod is slidably provided with a second support rod, and the left end of the second support rod is slidably provided with a chisel head body, and the right end of the chisel head body is fixed with a slider, and the outer end of the slider extends into the interior of the slide groove to form a locking mechanism, and the slide groove is opened inside the second support rod.

[0010] Preferably, a protrusion is slidably disposed inside the sliding block, and the outer end of the protrusion is arranged in a semicircular shape.

[0011] Preferably, the outer end of the protrusion extends into the interior of the groove to form a locking mechanism, and the groove is provided inside the second support rod.

[0012] Preferably, the inner end of the protrusion is connected to a first spring, and the inner end of the first spring is connected to the inside of the sliding block.

[0013] Preferably, a clamping block is slidably disposed inside the first support rod, and the inner end of the clamping block extends into the inside of the clamping slot to form a clamping mechanism, and the clamping slots are arranged at equal intervals inside the second support rod.

[0014] Preferably, the outer end of the block is connected to a second spring, and the outer end of the second spring is connected to the inside of the first support rod.

[0015] Preferably, the outer end of the clamping block is connected to a pull ring, and the outer end of the pull ring extends out to fit on the outer wall of the first support rod.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the electric chisel capable of quickly replacing the chisel head can improve the efficiency of replacing the chisel head body and can adjust the length, the purpose of quickly replacing the chisel head body can be achieved by rotating the slider, and the purpose of adjusting the length can be achieved by moving the clamping block, and the specific contents are as follows:

[0017] (1) A slider is provided, and the chisel head body is rotated so that the chisel head body rotates and drives the slider to rotate, so that the slider is disengaged from the slide groove, and then the chisel head body can be quickly replaced;

[0018] (2) A clamping block is provided, and the second support rod can slide inside the first support rod by moving the clamping block, so that the distance between the second support rod and the first support rod can be changed, thereby achieving the purpose of adjusting the length;

[0019] (3) A convex block is provided, the convex block slides inside the slider, and the outer end of the convex block is arranged in a semicircular shape, so that when the convex block and the groove are squeezed, the convex block can move automatically;

[0020] (4) A first spring is provided, and the first spring is connected to the inner end of the protrusion, and the inner end of the first spring is connected to the inside of the slider, so that the first spring can limit the protrusion, thereby improving the stability of the protrusion;

[0021] (5) A protrusion is provided, and a locking mechanism is formed by extending the outer end of the protrusion into the interior of the groove, and the groove is opened inside the second support rod, so that after the protrusion is locked with the groove, the locking stability between the slider and the slide groove can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-section structure of the second support rod of the utility model;

[0024] Figure 3 This is a schematic diagram of the side section structure of the slider of the utility model;

[0025] Figure 4 For this utility model Figure 2 A is a schematic diagram of the enlarged structure;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the slideway of the utility model;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the card slot of the utility model.

[0028] In the figure: 1, machine body; 2, first support rod; 3, second support rod; 4, chisel head body; 5, slider; 6, slide groove; 7, protrusion; 8, groove; 9, first spring; 10, clamping block; 11, clamping groove; 12, second spring; 13, pull ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] The utility model solves the problem that the existing chisel head needs to be rotated to drive the connecting rod to rotate inside the connecting groove, and the threaded connection takes a long time to replace the chisel head, resulting in slow replacement of the chisel head. The chisel head body 4 can be quickly replaced by sliding the slider 5.

[0032] The machine body 1 has a first support rod 2 embedded in the left end of the machine body 1; and further includes: a second support rod 3 slidingly disposed at the left end of the first support rod 2, a chisel head body 4 slidingly disposed at the left end of the second support rod 3, a slider 5 fixedly disposed at the right end of the chisel head body 4, and an outer end of the slider 5 extending into a slide groove 6 to form a locking mechanism, and the slide groove 6 is disposed inside the second support rod 3;

[0033] refer to Figures 1 to 3 and Figure 5By rotating the chisel head body 4, the chisel head body 4 drives the slider 5 to rotate, and then the slider 5 rotates to slide inside the slide groove 6. After the slider 5 rotates to the position, the slider 5 is disengaged from the slide groove 6, and then the chisel head body 4 is pulled, so that the chisel head body 4 can drive the slider 5 to disengage from the slide groove 6, and then the chisel head body 4 can be quickly replaced;

[0034] Embodiment 2:

[0035] The utility model solves the problem that the engagement between the slider 5 and the slide groove 6 in the first embodiment is not stable enough. The engagement between the protrusion 7 and the groove 8 can improve the stability of the engagement between the slider 5 and the slide groove 6. The utility model discloses:

[0036] A protrusion 7 is slidably arranged inside the slider 5, and the outer end of the protrusion 7 is arranged in a semicircular shape. The outer end of the protrusion 7 extends into the inside of the groove 8 to form a locking mechanism, and the groove 8 is provided inside the second support rod 3. The inner end of the protrusion 7 is connected to a first spring 9, and the inner end of the first spring 9 is connected to the inside of the slider 5.

[0037] refer to Figures 1 to 3 and Figure 5 The slider 5 rotates to drive the protrusion 7 to rotate, and then the protrusion 7 rotates to squeeze the groove 8, and then the protrusion 7 is squeezed to slide into the inside of the slider 5, and the movement of the protrusion 7 squeezes the first spring 9, so that the first spring 9 is compressed, and the movement of the protrusion 7 will be out of the engagement with the groove 8, and the force of the first spring 9 can push the protrusion 7 to extend into the inside of the groove 8 to form an engagement, thereby improving the stability of the engagement between the slider 5 and the slide groove 6;

[0038] Embodiment three:

[0039] The utility model solves the problem that the length of the existing electric chisel cannot be adjusted. By moving the clamping block 10, the distance between the second support rod 3 and the first support rod 2 can be adjusted. The utility model discloses:

[0040] A clamping block 10 is slidably disposed inside the first support rod 2, and the inner end of the clamping block 10 extends into the inside of the clamping slot 11 to form a clamping mechanism, and the clamping slots 11 are arranged at equal intervals inside the second support rod 3, the outer end of the clamping block 10 is connected to a second spring 12, and the outer end of the second spring 12 is connected to the inside of the first support rod 2, the outer end of the clamping block 10 is connected to a pull ring 13, and the outer end of the pull ring 13 extends out and fits on the outer wall of the first support rod 2;

[0041] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6By pulling the pull ring 13, the pull ring 13 moves and the block 10 is driven to move, so that the block 10 can move toward the inside of the first support rod 2, and then the movement of the block 10 will squeeze the second spring 12, so that the second spring 12 is compressed, and the movement of the block 10 will be out of engagement with the slot 11, so that the second support rod 3 can move inside the first support rod 2, and then the distance between the second support rod 3 and the first support rod 2 can be adjusted. After adjusting to a suitable position, the block 10 is pushed to move by the force of the second spring 12, so that the block 10 can extend into the inside of the slot 11 to form an engagement, so that the second support rod 3 can be fixed inside the first support rod 2.

[0042] Working principle: When using this electric chisel with quick-change chisel head, first, refer to Figures 1 to 3 and Figure 5 , by rotating the chisel head body 4, the chisel head body 4 rotates to drive the slider 5 to rotate, and after the slider 5 rotates to the position, the slider 5 is disengaged from the slide groove 6, and then the chisel head body 4 is pulled, so that the chisel head body 4 can drive the slider 5 to disengage from the slide groove 6, and then the chisel head body 4 can be quickly replaced;

[0043] refer to Figures 1 to 3 and Figure 5 The slider 5 rotates to drive the protrusion 7 to rotate, and then the protrusion 7 rotates to squeeze the groove 8, and the protrusion 7 moves to break away from the engagement with the groove 8, and the force of the first spring 9 can push the protrusion 7 into the interior of the groove 8 to form an engagement, thereby improving the stability of the engagement between the slider 5 and the slide groove 6;

[0044] refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 By pulling the pull ring 13, the pull ring 13 moves to drive the block 10 to move, and then the movement of the block 10 will squeeze the second spring 12, and the movement of the block 10 will disengage from the engagement with the slot 11, so that the distance between the second support rod 3 and the first support rod 2 can be adjusted. After adjusting to a suitable position, the block 10 is pushed to move by the force of the second spring 12, so that the block 10 can extend into the interior of the slot 11 to engage, so that the second support rod 3 can be fixed inside the first support rod 2.

[0045] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric chisel with a quickly replaceable chisel head, comprising a body (1), a first support rod (2) being embedded at the left end of the body (1); It is characterized in that Also includes: A second support rod (3) is slidably mounted on the left end of the first support rod (2), and a chisel head body (4) is slidably mounted on the left end of the second support rod (3), and a slider (5) is fixedly mounted on the right end of the chisel head body (4), and the outer end of the slider (5) extends into the interior of a slide groove (6) to form a locking mechanism, and the slide groove (6) is arranged inside the second support rod (3).

2. The electric chisel with a quickly replaceable chisel head according to claim 1, characterized in that: A convex block (7) is slidably disposed inside the sliding block (5), and the outer end of the convex block (7) is arranged in a semicircular shape.

3. The electric chisel with a quickly replaceable chisel head according to claim 2, characterized in that: The outer end of the protrusion (7) extends into the interior of the groove (8) to form a locking mechanism, and the groove (8) is arranged inside the second support rod (3).

4. The electric chisel with a quickly replaceable chisel head according to claim 2, characterized in that: The inner end of the protrusion (7) is connected to a first spring (9), and the inner end of the first spring (9) is connected to the interior of the slider (5).

5. The electric chisel with a quickly replaceable chisel head according to claim 1, characterized in that: A clamping block (10) is slidably disposed inside the first support rod (2), and the inner end of the clamping block (10) extends into the inside of the clamping slot (11) to form a clamping mechanism, and the clamping slots (11) are arranged at equal intervals inside the second support rod (3).

6. The electric chisel with a quickly replaceable chisel head according to claim 5, characterized in that: The outer end of the clamping block (10) is connected to a second spring (12), and the outer end of the second spring (12) is connected to the inside of the first support rod (2).

7. The electric chisel with a quickly replaceable chisel head according to claim 6, characterized in that: The outer end of the clamping block (10) is connected to a pull ring (13), and the outer end of the pull ring (13) extends out and fits on the outer wall of the first support rod (2).

Images